docs: def _fetch_all(self):
          """
          Completely overrides the QuerySet._fetch_all method by adding the
          timestamp to all objects
  
          :return: See django.db.models.query.QuerySet._fetch_all for return
              values
          """
          if self._result_cache is None:
              self._result_cache = list(self.iterator())
              # TODO: Do we have to test for ValuesListIterable, ValuesIterable,
              # and FlatValuesListIterable here?
              if self._iterable_class == ModelIterable:
                  for x in self._result_cache:
                      self._set_item_querytime(x)
          if self._prefetch_related_lookups and not self._prefetch_done:
              self._prefetch_related_objects()